In article . com,
Boltar wrote:
Can't see how its physically possible anyway. What would they
do, force all cars to have transceivers put in them? Who will
pay? And what if people just tell them to get lost? Put
cameras literally everywhere to catch them? IMO all it will do
is increase the already vast number of unregistered cars (or
registered to the wrong address) on the roads.

It's done in Melbourne already:

"City Link users are required to register with the Link operator,
CityLink Melbourne, either by opening a toll account or by buying
a DayPass. Those who open an account will receive a small wireless
device known as an e-TAG to install on the vehicle's windscreen.

Each e-TAG has a unique number stored in its electronic memory.
The e-TAG does not contain the vehicle's licence plate number, the
driver's name and address or other personal details.

When a vehicle carrying an e-TAG passes through a toll zone, the
e-TAG is detected by a scanner mounted on a gantry above the
roadway and the identifying number is recorded. This number is
linked to the driver's toll account in the central tolling
computer system located in South Melbourne.

When a driver's e-TAG is recorded passing under a gantry, the
tolling computer deducts the toll for that toll zone from the
driver's toll account. This process represents a single
'transaction'. Each transaction is similar to a withdrawal from a
bank account and is entered into the records of the driver's toll
account."

http://www.roadtraffic-technology.co...urne_citylink/

--
Tony Bryer